There is a video game place near here so I will give him a ring in the morning.
It was working perfectly before it got cold, dont think its as damp as first thought. On the high score screen, white writing is still displayed where the screen has gone dark. The mainboard looks in good condition, if a little dusty, I keep reading a lot about cap kits, is this not likely to be something along those lines? It depends what you mean by a lot, I really like this machine and would like to get it working again.